This dice set is a great tool for classroom use to teach probability, fractions, and place value. Made of sturdy plastic. These easy-to-read dice can be used in all sorts of board games or probability activities. Set of 56 dice contains 4 large place value dice (34mm); 3 large dice representing fractions, decimals, and percents; 1 jumbo 10-sided die (34mm); 6 polyhedra dice, 6 fraction dice; 2 operation dice; 10 number dice; 6 each of classic dot dice in white, green, red, and blue; sturdy plastic storage case.